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| author | Robin Murphy <robin.murphy@arm.com> | 2016-01-26 20:13:13 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2016-02-17 17:14:57 +0300 |
| commit | e5fc9753b1a831466be9b45d0bf926eeaa8b84a0 (patch) | |
| tree | 1ad4075104603c576ba895ab766f79a3222fdd46 /drivers/iommu/io-pgtable.h | |
| parent | 18558cae0272f8fd9647e69d3fec1565a7949865 (diff) | |
| download | linux-e5fc9753b1a831466be9b45d0bf926eeaa8b84a0.tar.xz | |
iommu/io-pgtable: Add ARMv7 short descriptor support
Add a nearly-complete ARMv7 short descriptor implementation, omitting
only a few legacy and CPU-centric aspects which shouldn't be necessary
for IOMMU API use anyway.
Reviewed-by: Yong Wu <yong.wu@mediatek.com>
Tested-by: Yong Wu <yong.wu@mediatek.com>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/iommu/io-pgtable.h')
| -rw-r--r-- | drivers/iommu/io-pgtable.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/iommu/io-pgtable.h b/drivers/iommu/io-pgtable.h index 36673c83de58..aa57073b1d8d 100644 --- a/drivers/iommu/io-pgtable.h +++ b/drivers/iommu/io-pgtable.h @@ -1,5 +1,6 @@ #ifndef __IO_PGTABLE_H #define __IO_PGTABLE_H +#include <linux/bitops.h> /* * Public API for use by IOMMU drivers @@ -9,6 +10,7 @@ enum io_pgtable_fmt { ARM_32_LPAE_S2, ARM_64_LPAE_S1, ARM_64_LPAE_S2, + ARM_V7S, IO_PGTABLE_NUM_FMTS, }; @@ -45,7 +47,9 @@ struct iommu_gather_ops { * page table walker. */ struct io_pgtable_cfg { - #define IO_PGTABLE_QUIRK_ARM_NS (1 << 0) /* Set NS bit in PTEs */ + #define IO_PGTABLE_QUIRK_ARM_NS BIT(0) /* Set NS bit in PTEs */ + #define IO_PGTABLE_QUIRK_NO_PERMS BIT(1) /* No AP/XN bits */ + #define IO_PGTABLE_QUIRK_TLBI_ON_MAP BIT(2) /* TLB Inv. on map */ int quirks; unsigned long pgsize_bitmap; unsigned int ias; @@ -65,6 +69,13 @@ struct io_pgtable_cfg { u64 vttbr; u64 vtcr; } arm_lpae_s2_cfg; + + struct { + u32 ttbr[2]; + u32 tcr; + u32 nmrr; + u32 prrr; + } arm_v7s_cfg; }; }; @@ -149,5 +160,6 @@ extern struct io_pgtable_init_fns io_pgtable_arm_32_lpae_s1_init_fns; extern struct io_pgtable_init_fns io_pgtable_arm_32_lpae_s2_init_fns; extern struct io_pgtable_init_fns io_pgtable_arm_64_lpae_s1_init_fns; extern struct io_pgtable_init_fns io_pgtable_arm_64_lpae_s2_init_fns; +extern struct io_pgtable_init_fns io_pgtable_arm_v7s_init_fns; #endif /* __IO_PGTABLE_H */ |